Polyurethane moldings are a lightweight and durable decorative solution that quickly adds character to walls in areas such as living rooms, behind TVs, and hallways. What are polyurethane moldings? Why are they preferred? Polyurethane moldings are a paintable and moisture-resistant material used to create framing, paneling, or modern lines on walls and ceilings. They are frequently preferred over wooden strips due to their lighter weight, smoother surface, and ease of cutting